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高頻變壓器負(fù)荷和壽命的關(guān)??/h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
id="cntrHits">-</span></span><span>發(fā)表時(shí)間??013-12-31 16:02:00</span>
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<p> 在正常的情況??<strong><a href="http://cmqp.com.cn/product/product-0001,0015.shtml">高頻變壓??/a></strong>正常使用年限??0??0年，但個(gè)別變壓器由于使用不當(dāng)，不能正確調(diào)整負(fù)荷，達(dá)不到正常使用年限，造成不必要的經(jīng)濟(jì)損失,因此在使用的過程??我們應(yīng)該注意可能會(huì)對(duì)高頻變壓器使用壽命造成傷害因素的影??</p>
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<div> 1.高頻變壓器絕緣溫度與使用壽命的關(guān)系??/div>
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<div> 我國(guó)電力變壓器，大部分采用油紙絕緣即A級(jí)絕緣。對(duì)于A級(jí)絕緣的變壓器，在正常運(yùn)行中，當(dāng)周圍空氣溫度??0℃時(shí)，變壓器繞組的極限工作溫度為105℃??/div>
<div> </div>
<div> 若變壓器的運(yùn)行溫度長(zhǎng)時(shí)間超過允許值，則變壓器的絕緣容易損壞。因?yàn)榻^緣長(zhǎng)期受熱老化，溫度越高絕緣老化越快。當(dāng)絕緣老化到一定程度時(shí)，在運(yùn)行震動(dòng)和電動(dòng)力的作用下，造成絕緣破裂，易發(fā)生電氣擊穿的故障，導(dǎo)致變壓器使用壽命減少??/div>
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<div> 據(jù)有關(guān)資料和實(shí)踐證明??/div>
<div> </div>
<div> 變壓器絕緣工作溫度在95℃時(shí)，使用年限為20年??/div>
<div> </div>
<div> 變壓器絕緣工作溫度在105℃，使用年限??年??/div>
<div> </div>
<div> 變壓器絕緣工作溫度在120℃時(shí)，使用年限為2年??/div>
<div> </div>
<div> 2.正確調(diào)整變壓器負(fù)荷，使變壓器達(dá)到理想的使用年限??/div>
<div> </div>
<div> 高頻變壓器內(nèi)部的絕緣溫度在電壓基本一定的前提下，主要與負(fù)荷電流大小有關(guān)，即負(fù)荷電流大，絕緣溫度則高，反之負(fù)荷電流小絕緣溫度低。高頻變壓器在運(yùn)行中過負(fù)荷或夏季帶額定負(fù)荷運(yùn)行時(shí)，內(nèi)部絕緣處在高溫下運(yùn)行，變壓器的壽命損失將加快。若變壓器處于輕負(fù)荷或冬季帶額定負(fù)荷運(yùn)行時(shí)，其內(nèi)部絕緣在低溫下運(yùn)行，變壓器壽命損失則可減緩。因此為了使變壓器負(fù)荷能力在全年得到充分利用又不影響變壓器正常使用年限，每個(gè)月負(fù)荷可適當(dāng)調(diào)整??/div>
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